Pipe-bending machine



Apr. 3', 1923.

l ,'450;3'7 W. H. BEERS PIPE BENDING MACHINE Filed om. 1, 1919 ssheets-sheez @uvam/6oz w. H. BEERS PIPE 'BENDING MACHINE 'Filed ocr. 1,1919 3 sheets-sheen s k N. QN

%f2 my SH01/Meij t of bendingis reduced.

Patented Apr. 3, 1923.

t UNITED To all whom tmay concern.'

Be fit Vknownthat 1,' NVILLIAM H. BEERs,l a

citizen of the YUnited. 'Statesfresiding "iatA Portland, in the countyofv Multnomah and' State of Oregon, have invented'nevv and useful'Iniprovfements in Pipe-Bei'iding Machines,

of which `the follo-Win'g'is al speciication.I

|The inventionis particularly' designed to v bend pipes leavingthe'pipe-infp'erfeet condition at the bend; tGpIOVidefa'maChine iniwhich di'erent-sizes of vpipemay be vreadily taken care of; and 'toYprovide themachinervvith sufiicient power so that `the eifort The'invention 1s lllustratedin the 'accomvpanying drawings as follows Fig.1 shows afplan View 'of thet rnaohine.

Fig. 2 a sideelevation ofthe -inaohine. 'Fig.`3 afsectionon the line 3-3'in'Fig y1. Fig. 4 a section on-,the lines 4 '4 in Figs. land 3.. f -VFig. A5 a'section on the lines '5 5 in Figs. 1 and"3.g i Fig.6an"enlar'ged view-showingthe construction 'of thel bending sheavegrooves.

Figi? a view of the clamp. Fig. 8 is .an enlarged sectional view show-'ing thecontour of Ythe bending groove fin the sheaves.

V1 marks lthe a table and l having `thesupportinglegs v2.

rThei table has a' circular 4slotfB through it which isncentric with anupright shaft' 4.

i' offftle driving surface up and. down it Awill "'be' Ar'lotel isgreater than l,the distance "between ,y

theupperjend' of the driving surface .and the eenterf the groove ofthesheave lse'the,tjthe s f'engaglng-surfaee's on fthe postare' ampleLtopins 13.., extending from the.guide.-1016ckd 8,

underside of lthe table adj aent to the'groove vvILLrAM- H. BEERS, or*POTLAND. caisson.

frame which teint-tht form of' 'PIPE-.12.ENDING MACHINE.

.Apputtttiotifiita-l october 1, 191e. Usati-arno. Y#3273631.

or slot-.33." The post'is 'adjusted'and locked in position by lasetfscrevv V15 Whichfextemds 'tliipughl `the outer surface of "the"wheel against t the extension A10. A* pivotalmounting 16 is arrangedon-thetopof thefshaft 4 and secured 'in -place lthereon by anut -17 the-sanne nut'fsecuringthe ysheaW-i L5. An 'arm 18 is pivotally'connected-byalpin 19 With the- I Amounting 16 and `has a*` 'slot v'19ain 'its outer 'end adapted-to drop overthereduoedfupper -end 20' of thepost t. on the extension -QOorloeking -`the arm; vv18 in position andthe adjusting-nutoperates Y against fthe" post so astoadjust land vlockthepos't radially and to adjustthei sheaves 6 With? relationt'o thevsheave v5. It 'Willfbe funderstood that the post7-is'n1ovedjoutwardlylpipeor move the pipe-'inthe grooveand'the or radially Whenit lisdesired torelnovethe slot B -4has vradial extensions, 14 at its'endslyvhi'oh Will 'permit "the radial 'movement of the fpost for thispurpose. "fjItfvvill'fbe lobservedthatl thear'm .18 and the'wlieeill 9are Carried by the @am shaftettnd ,that 'the post is locked againstlradial"Inoveuieiitby the screws 22""a`n`d 15v so thatthefsha'zft is'fully seeuredagainst the 'thrust to Whiehvit isgsubjented inbendingfthe pipe.

*y It isldesirable;toleadithe pipeivvithaflead 'sheavelrso as to relievevthe pipe v'frontiI'crufsh-.j t ing 'strain' in bending. LInfthefpresfe'ntiin- 'stance this is'xdrivern through "an 'arrn"2 3, `the. larm 'being"pivotallyv mounted on the shaftl 4. This' arr'n 23 is'provided atl one' point With la y Ysi'otft '.thru'gh' which the post Tfextends. SQy

sov

that the afruiA is driven by andfvvith the'fpost T and "Wheel l9- The'arm isprovidfedwjth a ,guide Way '25xn .which ,is arranged 'atgll''de`"slot 26. Alead `sheave 27.,.is`inounted' on a post`28. This postextends' througnthe slot,

26 and hasV @head 29vvhich,operatesinjthe u i ftlamp'ingethearm'bietwentheihead.291m t 'the ",bilshiliig thus securing the)l post.in any? adjustment ,destre-t1; '-jrhis adjustment is 1 necessary "fordifferent" bends vand tars" 1101# i; "t1, 36 is "mountedonaplate. 'Theplate 1.0.5 i also, @mavuf A,be desirable in fLSSSng to rem vegtlle4pipe.l

,The pipe is 'clamped gingp'ositionand it Will -bef;undorst-ood"j` that'diii'erent sizes of .the jaw 39. i bolt 42a extends through the hingedjaw. and is provided with a handle nut 42b by means of which the hingedjawA may be clamped on the pipe.

The wheel 9 has a segment of a worin gear 43 which meshes with a worin46 mounted on a shaft 47. The shaft is journaled in the bearings 48. Thebearings are carried bythe.

brackets 49 secured to the frame.. A hand wheel 50 is xed on the shaft47 by means of Vwhich the worin gear may rotate 'to effect the bendingof the pipe.

In order to ease `the pipe I prefer to form n grooves in sheaves and 6as clearly shown nationof atable having a curved slot therewith the axisof the:i body ;I a post mounted in Figs. 6 and 8, the groove having aportion 5l which extends straight in from the tace of the sheave, thecurved portion 52 approximating the curvature of the pipe and a portion53 which extends inwardly from the curvature 52 extended. In this waythe top and bottom ot1 the pipe are engaged by straight. portions whichprevent any bulging of the pipe andthe pipe is eased at the bottom ofthe groove.

What I claim as new is l'. In a pipebending machine, the combination ofa curved grooved bending body; a grooved bending sheave; a drivingwheelhaving an axis coincident with the axis of.

the body; a bearing post for the sheave; a

sliding mounting on the wheel for the post,

said mounting having driving surfaces adapted to drive the post in acircumferential direction. with the wheel, said driving Vsurfaces havinga driving engagement with the post for a greatery distance lengthwise ofthe ost than the distance between the top of t e driving surfaces andythe center of the groove of the sheave; and means for driving vthewheel. V

2. AIn ay pipebendingmachine, the combi- `in; a curved groovedbendingbody concentric with the slot; a grooved bending sheave; adriving wheel having an axis coincident on the. driving wheelandlextending through the slotronwhichthe sheave is.. mounted;

" and means for driving wheel. l

3. In av pipe bending machine, the combiaadjustingthe post on the nationof atable having a curved slot there- Qin.; a

l grooved bending body carried by the table and havingan axis coincidentwith the s1ot;a bending sheave; a drive wheel below the t-able having anaxis coincident `with the axis of the body; a post carried by the wheeland extending through said slot and on which said sheave is mounted,said post having 'a sliding mounting on the wheel comprising means forlocking the post against rotation relatively to the wheel; and rollersfixed on the post and engaging the table adjacent to the slot.

4. In a pipe bending machine, the combination oi"- a table having aslot. therein; a grooved bending body mounted on the table; a sheaveoperating in relation to the bending body; a drivefw'heel arranged belowthe` slot journaled on the post and adapted to.

engage the underside of thetable.

5. In a pipe bending machine, the combination of a table having a curvedslot' therein; a bending body mounted oni-the table; a bending sheaveoperating in relation to the body; a post t on which the sheave ismounted extending through the slot; a drive wheel arranged below thetable on which the post is mounted; and an arm mounted concentricallywith the wheel and engaging the post above the table.

6.r In a pipe bendingY machine, the combination of a table having acurved slot. therein; a bending body mounted on the table; a

bending sheave operating in relation to the body; a post on which thesheave is mounted extending through the slot; a drive. wheel arrangedbelow the table on which the post is mounted; and an arm mountedconcentrically with the wheel above the sheave and with the wheel abovethe sheave; and means` on the arm and wheel for adjusting the postrelatively to the axis of the wheel. y

8. In a ipe bending machine, the coinbination ci; a tabley having acurved slot therein; a grooved bending body mountedon the tableconcentric with the slot; a sheave.; a

post on which the sheave is mounted extending through the slot; a wheelarranged bel low the table and having a slot in which the f post ismounted; an arm above theA sheaveI mounted concentrically with the wheeland having a slot in whichthe post is4 mounted; and means for adjustingthe post` in said slots.

9. In a pipe-bending machine, the combination of a table having a curvedslot therecoincident with the axis of the body; a`

bearing post for the sheave extending through the slot in the table; asliding mounting yon the wheel 'for the post; means forv adjusting thepost in the mounting; means for driving the wheel; a lead sheave abovethe table and in the plane of the Urooved bending sheave; and meansdriven by the post for driving the lead sheave.

10. In a pipe bending machine, the combination oi' a table having acurved slot therein; a curved bending body above the table; a bendingsheave above the table; a swinging mounting above the table for thebending sheave, said mounting being concentric with the curved bendingbody; a lead sheave; ya mounting for the leadsheave above the tableswinging on an axis coincident with the axis of the curved body; meansfor adjusting the' lead sheave with relation to the axis of the curvedbody comprising a slotted arm carried bythe mounting; a post slidingly imounted in the arm; a distance piece arranged on the post and on whichthe sheave is journaled; and means operating on the distance piece forclamping the slotted arm in relation to the post.

11. In a pipe bending machine, the combination of a grooved bending bodycurved to the bend lof the pipe; and a sheave op,- erating in connectiontherewith and on an axis coincident with the axis ofthe bending body,said sheave having a groove the walls of which extend straight infromtheperiphery a slight ydistance vandv are continued in a curveapproximating the curve of' the pipe. y 1 e 12. In a pipe bendingmachine,the combination of a grooved bending body; and a sheaveoperating in connection therewith, said sheave having a groove the wallsof which extend straight in fromA the periphery a slight distance andare `continuedin acurve approximating the curve of the pipe,y

the bottom of the groove being cut away to a greater depth than thecurve ofthe side walls of the groovefcontinued. v

13. In a pipe bending machine, the combination of a bending body; and agrooved .sheave operating in connection therewith,

said body having a groove therein, the walls of the groove extendingstraight in from the periphery of the body for a slight distance andcontinued with a curve approximating the curve of the pipe, the groovebeing cut away at the bottom toa greater depth than a continuation ofthe side walls of the groove continued.

nation of a bending body; and a sheave op- 14. In a pipe bendingmachine, the combii. y

erating in connection therewith, said bending f body and sheave eachhaving a groove, the walls of which extend straight in. from theperiphery for a slight distance and are continued with a curveapproximating the curve of the pipe, said groove being of a greaterVdepth than the curve of the side walls of the groove continued.

In testimony whereof my hand.

I have hereuntoset ,i

f WILLIAM n.l Beans.:

